Sustainable energy generation through engineered copper molybdate: a ternary metal oxide catalyst for efficient oxygen evolution in alkaline environments

IF 6.7 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2025-06-11 DOI:10.1016/j.fuel.2025.135906

Hung-Chang Cheng , Dhanapal Vasu , Hsin-Yu Lin , Zhen-Yuan Lan , Leggins Abraham , Tetsu Yonezawa , Te-Wei Chiu

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引用次数: 0

Abstract

The world is currently facing an energy shortage, and renewable hydrogen technology is regarded as a key alternative to fossil fuels. Among these technologies, water splitting processes, such as oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), have attracted significant attention for their environmentally friendly nature. This study focuses on the synthesis and application of copper molybdate (Cu₃Mo₂O₉) based ternary metal oxides (TMOs), which exhibits an orthorhombic crystal structure, variable oxidation states, and excellent redox properties, making it highly promising for applications in electrocatalysis and energy storage. Using the hydrothermal method, the reaction solution pH was adjusted to identify the sample with optimal crystallinity and structural characteristics. Experimental results show that Cu₃Mo₂O₉ nanoparticles with superior crystallinity was successfully synthesized at pH 11. The optimized pH electrocatalyst exhibits better OER with an overpotential of 170 mV at a current density of 10 mA cm⁻² and Tafel value of 153 mV/dec. TMOs have high specific capacitance and excellent stability, highlighting its potential as an energy material.

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可持续能源产生通过工程钼酸铜：一个三元金属氧化物催化剂，在碱性环境中有效的析氧

目前世界正面临能源短缺，可再生氢技术被视为化石燃料的关键替代品。在这些技术中，析氧反应（OER）和析氢反应（HER）等水裂解工艺因其环保性而备受关注。本文主要研究了钼酸铜（Cu3Mo2O9）基三元金属氧化物（TMOs）的合成与应用，该材料具有正交晶型结构、可变氧化态和优异的氧化还原性能，在电催化和储能领域具有广阔的应用前景。通过水热法调整反应溶液的pH值，鉴定出具有最佳结晶度和结构特征的样品。实验结果表明，在pH为11的条件下，成功合成了结晶度较高的Cu3Mo2O9纳米颗粒。优化后的pH电催化剂在电流密度为10 mA cm−2时的过电位为170 mV， Tafel值为153 mV/dec。TMOs具有高比电容和优异的稳定性，突出了其作为能源材料的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.